1 files changed, 67 insertions, 0 deletions
diff --git a/tc/p_tcp.c b/tc/p_tcp.c
new file mode 100644
index 0000000..43d7fb4
--- /dev/null
+++ b/tc/p_tcp.c
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * m_pedit_tcp.c	packet editor: TCP header
+ *
+ * Authors:  J Hadi Salim (hadi@cyberus.ca)
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+#include "utils.h"
+#include "tc_util.h"
+#include "m_pedit.h"
+
+static int
+parse_tcp(int *argc_p, char ***argv_p,
+	  struct m_pedit_sel *sel, struct m_pedit_key *tkey)
+{
+	int res = -1;
+	int argc = *argc_p;
+	char **argv = *argv_p;
+
+	if (argc < 2)
+		return -1;
+
+	if (!sel->extended)
+		return -1;
+
+	tkey->htype = TCA_PEDIT_KEY_EX_HDR_TYPE_TCP;
+
+	if (strcmp(*argv, "sport") == 0) {
+		NEXT_ARG();
+		tkey->off = 0;
+		res = parse_cmd(&argc, &argv, 2, TU32, RU16, sel, tkey, 0);
+		goto done;
+	}
+
+	if (strcmp(*argv, "dport") == 0) {
+		NEXT_ARG();
+		tkey->off = 2;
+		res = parse_cmd(&argc, &argv, 2, TU32, RU16, sel, tkey, 0);
+		goto done;
+	}
+
+	if (strcmp(*argv, "flags") == 0) {
+		NEXT_ARG();
+		tkey->off = 13;
+		res = parse_cmd(&argc, &argv, 1, TU32, RU8, sel, tkey, 0);
+		goto done;
+	}
+
+	return -1;
+
+done:
+	*argc_p = argc;
+	*argv_p = argv;
+	return res;
+}
+struct m_pedit_util p_pedit_tcp = {
+	.id = "tcp",
+	.parse_peopt = parse_tcp,
+};